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FJR Motorcycle Forums
Technical & Mechanical Problems
Bad ABS hydraulic unit/module 2007A, per Yamaha dealer
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<blockquote data-quote="RossKean" data-source="post: 1347686" data-attributes="member: 19880"><p>I'm guessing that it isn't the ABS module. Failure of the module usually just results in a lack of functional ABS, not a brake lever that goes to the bar without effect. My bet is on an air bubble somewhere in the system. In the ABS block or at the "tee" where it splits left and right. These can be difficult to bleed completely. Sometimes it helps to bungee the brake lever to the bar overnight. Alternatively, a Mityvac may be able to get enough flow velocity to move bubbles along.</p><p></p><p>I have never heard of this issue with a Gen II FJR.</p><p></p><p>Have a really good look at the brake lines as well. If you had a leak, it would be immediately obvious but if a line were bulging under pressure, it could show a similar effect.</p></blockquote><p></p>
[QUOTE="RossKean, post: 1347686, member: 19880"] I'm guessing that it isn't the ABS module. Failure of the module usually just results in a lack of functional ABS, not a brake lever that goes to the bar without effect. My bet is on an air bubble somewhere in the system. In the ABS block or at the "tee" where it splits left and right. These can be difficult to bleed completely. Sometimes it helps to bungee the brake lever to the bar overnight. Alternatively, a Mityvac may be able to get enough flow velocity to move bubbles along. I have never heard of this issue with a Gen II FJR. Have a really good look at the brake lines as well. If you had a leak, it would be immediately obvious but if a line were bulging under pressure, it could show a similar effect. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Bad ABS hydraulic unit/module 2007A, per Yamaha dealer
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